CN211063229U

CN211063229U - Cable fixing head

Info

Publication number: CN211063229U
Application number: CN201922283245.0U
Authority: CN
Inventors: 张纯; 李小强; 曾凡乐; 苏荣建
Original assignee: Beisit Electric Tech Hangzhou Co ltd
Current assignee: Beisit Electric Tech Hangzhou Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-07-21
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a cable fixing head, which comprises a main body, a tightening nut, a fastener, a waterproof ring and a blank cap, wherein one end of the main body is connected with the fastener, the other end of the main body is in threaded connection with the tightening nut, the waterproof ring is connected with the main body, and the waterproof ring is arranged in an inner hole of the tightening nut; the surface of an inner hole of the waterproof ring is provided with a boss, one end of the boss, which is close to the packing nut, is an inclined plane, and the height of one end, which is close to the packing nut, of the inclined plane is greater than that of one end, which is close to the main body, of the inclined plane; the blank cap is arranged in the inner hole of the waterproof ring through the inner hole of the tightening nut. Thus, when the tightening nut is tightened, the vertical downward pressure can be resolved into a force directed vertically downward from the ramp and a force directed downward along the ramp of the boss, which acts to retract and lock the cable inwardly from the boss. Because the boss surface has certain difference in height, the line footpath span of cable fixed head is big, has avoided changing the model of cable fixed head when the cable line footpath changes, has effectively promoted product property ability.

Description

Cable fixing head

Technical Field

The utility model relates to a cable protection accessory technical field, more specifically say, relate to a cable fixing head.

Background

The cable fixing head is used for fixing and protecting a cable and is widely applied to the fields of mechanical equipment electricity, ship electricity and the like.

In the prior art, a clamping claw and a clamping ring are arranged in inner holes of a threaded sleeve main body and a clamping nut of the cable fixing head, the clamping claw is connected with the threaded sleeve main body, and the cable is locked and fixed through the clamping claw and the clamping ring.

Because the internal diameters of the clamping claws and the clamping ring are fixed values in the axial direction, the span of the cable diameter which can be locked by the cable fixing head is small, and when the cable diameter is changed, the model of the cable fixing head needs to be replaced, so that great inconvenience is brought to installation and model selection.

In summary, how to increase the span of the cable diameter of the cable fixing head is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a cable fixing head is equipped with the boss on waterproof circle's internal surface, and the boss is pressed inwards to shrink when screwing up and compel tight nut, has increased cable fixing head's line footpath span.

In order to achieve the above object, the present invention provides the following technical solutions:

a cable fixing head comprises a main body, a packing nut, a fastener, a waterproof ring and a blank cap, wherein one end of the main body is connected with the fastener, the other end of the main body is in threaded connection with the packing nut, the waterproof ring is connected with the main body, and the waterproof ring is arranged in an inner hole of the packing nut;

a boss is arranged on the surface of an inner hole of the waterproof ring, one end, close to the packing nut, of the boss is an inclined plane, and the height of one end, close to the packing nut, of the inclined plane is larger than that of one end, close to the main body, of the inclined plane;

the blank cap penetrates through an inner hole of the packing nut and is arranged in an inner hole of the waterproof ring.

Preferably, the boss is an annular boss arranged on the surface of the waterproof ring, and the axis of the annular boss coincides with the axis of the waterproof ring.

Preferably, a gasket is arranged between the tightening nut and the waterproof ring to prevent the waterproof ring from rotating along with the tightening nut when the tightening nut is screwed.

Preferably, the waterproof ring is relatively close to the end face of the main body and the main body is relatively close to one of the end faces of the packing nut is provided with a convex block, and the other is provided with a groove used for being clamped with the convex block.

Preferably, the main part is close to relatively be equipped with a plurality of discrete recess on the terminal surface of packing nut, and a plurality of discrete recess is in evenly distributed is in the circumferential direction of main part.

Preferably, the fastener is a hexagon nut, the main body is used for being provided with a fool-proof horizontal position in a threaded section connected with the hexagon nut, and the length of the fool-proof horizontal position is the same as that of the threaded section.

Preferably, the cross section of the boss is isosceles trapezoid.

The utility model provides a cable fixing head, including main part, compel tight nut, fastener, waterproof circle and stifle, one end of main part is connected with the fastener, the other end of main part and compel tight nut threaded connection, waterproof circle is connected with the main part, waterproof circle installs in compel tight nut's hole; the surface of an inner hole of the waterproof ring is provided with a boss, one end of the boss, which is close to the packing nut, is an inclined plane, and the height of one end, which is close to the packing nut, of the inclined plane is greater than that of one end, which is close to the main body, of the inclined plane; the blank cap passes through the inner hole of the packing nut and is arranged in the inner hole of the waterproof ring.

When the packing nut is screwed, the waterproof ring is stressed by vertical downward pressure from the packing nut, because one end of the boss close to the packing nut is an inclined plane and the height of one end of the inclined plane close to the packing nut is greater than that of one end of the inclined plane close to the main body, the vertical downward pressure can be decomposed into acting force vertical to the surface of the boss, downward in the direction and acting force pointing to the axis of the waterproof ring along the surface of the boss, and the boss is retracted inwards under the action of the latter to lock the cable.

Because the boss surface has certain difference in height, compare in the cylinder hole in prior art, the line footpath span of cable fixed head is big, has avoided the trouble of changing the model of cable fixed head when the cable line footpath changes, has effectively promoted product property ability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a locking cable fixing head provided by the present invention;

FIG. 2 is a schematic cross-sectional view of the locking cable retention head of FIG. 1;

FIG. 3 is a top view of the packing nut of FIG. 1;

FIG. 4 is a cross-sectional schematic view of the packing nut of FIG. 3;

FIG. 5 is a schematic top view of the waterproof ring of FIG. 1;

FIG. 6 is a cross-sectional schematic view of the waterproof ring of FIG. 5;

FIG. 7 is a schematic top view of the body of FIG. 1;

FIG. 8 is a cross-sectional schematic view of the body of FIG. 7;

FIG. 9 is a schematic top view of the gasket of FIG. 1;

fig. 10 is a schematic cross-sectional view of the gasket of fig. 9.

In fig. 1-10:

the nut comprises a hexagon nut 1, an O-shaped ring 2, a main body 3, a sealing groove 31, a groove 32, a waterproof ring 4, a convex block 41, a boss 42, a gasket 5, a packing nut 6 and a blank cap 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a cable fixed head is equipped with the boss on waterproof circle's internal surface, and the boss pressurized is inwards shrunk when screwing up and compels tight nut, has increased cable fixed head's line footpath span.

Referring to fig. 1 to 10, fig. 1 is a schematic structural diagram of an embodiment of a locking cable fixing head according to the present invention; FIG. 2 is a schematic cross-sectional view of the locking cable retention head of FIG. 1; FIG. 3 is a top view of the packing nut of FIG. 1; FIG. 4 is a cross-sectional schematic view of the packing nut of FIG. 3; FIG. 5 is a schematic top view of the waterproof ring of FIG. 1; FIG. 6 is a cross-sectional schematic view of the waterproof ring of FIG. 5; FIG. 7 is a schematic top view of the body of FIG. 1; FIG. 8 is a cross-sectional schematic view of the body of FIG. 7; FIG. 9 is a schematic top view of the gasket of FIG. 1; fig. 10 is a schematic cross-sectional view of the gasket of fig. 9.

The utility model discloses a cable fixing head, including main part 3, compel tight nut 6, fastener, waterproof circle 4 and stifle 7, one end of main part 3 is connected with the fastener, the other end of main part 3 and compel tight nut 6 threaded connection, waterproof circle 4 is connected with main part 3, waterproof circle 4 is installed in the hole of compel tight nut 6; the surface of the inner hole of the waterproof ring 4 is provided with a boss 42, one end of the boss 42 close to the packing nut 6 is an inclined plane, and the height of one end of the inclined plane close to the packing nut 6 is greater than that of one end of the inclined plane close to the main body 3; the blank cap 7 is arranged in the inner hole of the waterproof ring 4 through the inner hole of the fastening nut 6.

The main body 3 is the main structure of the cable fixing head, a through hole for the cable to pass through is arranged on the main body, and two ends of the main body are respectively connected with the fastening piece and the tightening nut 6.

Preferably, can set up the fastener into standard part hexagon nut 1, keep away from in main part 3 and compel tight nut 6 one section and be provided with the first screw portion of installation hexagon nut 1, hexagon nut 1 is threaded connection with main part 3, reduction in production cost, improvement production efficiency.

The size of the hexagon nut 1 is determined according to the cable diameter suitable for the cable fixing head, and the length of the first thread part is determined according to factors such as the size of locking force required in actual production.

Preferably, the O-ring 2 may be disposed between the body 3 and the hexagon nut 1, a sealing groove 31 for mounting the O-ring 2 is disposed on an end surface of the body 3 relatively close to the hexagon nut 1, and a depth of the sealing groove 31 is smaller than a thickness of the O-ring 2.

O type circle 2 is installed in seal groove 31, because the degree of depth of seal groove 31 is less than the thickness of O type circle 2, O type circle 2 expands in axial direction after hexagonal nut 1 screws up, has avoided moisture to get into in the main part 3, has improved the waterproof performance of cable fixing head.

The waterproof ring 4 is installed in the inner hole of the packing nut 6, preferably, please refer to fig. 2, a backstop structure may be arranged on the bottom surface of the inner hole of the packing nut 6 to prevent the packing nut 6 from directly contacting the waterproof ring 4 to influence the screwing process of the packing nut 6.

The through hole on the main body 3 can be a cylindrical hole or a circular truncated cone hole with a certain taper, and the taper of the circular truncated cone hole is determined according to the requirements in actual production, so that the cable fixing head can adapt to the change of the wire diameter of the cable to a certain extent.

The main part 3 is connected with the tightening nut 6 through a second thread part, and the length of the second thread part is determined according to the size of locking force required in actual production.

The pitch of the first threaded portion may be the same as or different from the pitch of the second threaded portion. The number of threads of the first thread part may be the same as or different from the number of threads of the second thread part, and preferably, both the first thread part and the second thread part are single-start threads.

When the tightening nut 6 is screwed, the waterproof ring 4 is stressed by vertical downward pressure from the tightening nut 6, because one end of the boss 42 close to the tightening nut 6 is an inclined surface and the height of the inclined surface close to one end of the tightening nut 6 is greater than that of the inclined surface close to one end of the main body 3, the vertical downward pressure can be decomposed into acting force which is vertical to the surface of the inclined surface and downward and acting force which is along the surface of the inclined surface and directed to the axis of the waterproof ring 4, and the boss 42 is contracted inwards and locks the cable under the action of the latter.

Because the both ends on inclined plane have certain difference in height, compare the cylinder hole in waterproof circle 4 in prior art, the line footpath span of cable fixed head is big, has avoided the trouble of changing the model of cable fixed head when the cable line footpath changes, has effectively promoted and has produced the property ability.

Preferably, the boss 42 may be an annular boss provided on the surface of the waterproof ring 4, and an axis of the annular boss coincides with an axis of the waterproof ring 4.

Because the bosses 42 are arranged on the inner wall of the waterproof ring 4 in a surrounding manner, when the tightening nut 6 is screwed down, the bosses 42 are all subjected to downward pressure along the inclined surface in the circumferential direction, so that the bosses 42 are forced to shrink inwards to lock the cable, and the locking effect is good because the bosses 42 are uniformly stressed in the circumferential direction.

Preferably, the cross-sectional shape of the boss 42 may be a triangle, a right trapezoid, or an isosceles trapezoid as shown in fig. 6, or any other geometric shape as long as the requirement that one end close to the tightening nut 6 is an inclined surface is satisfied.

On the basis of the above-described embodiment, the protrusion 41 may be provided on one of the end surface of the waterproof ring 4 relatively close to the main body 3 and the end surface of the main body 3 relatively close to the packing nut 6, and the groove 32 for fitting with the protrusion 41 may be provided on the other.

The cross-section of the groove 32 may be rectangular, triangular, or any other geometric shape.

Preferably, an annular groove may be provided on the end face of the body 3 relatively close to the packing nut 6.

Preferably, the cross section of the annular groove may be trapezoidal, and the area of the bottom surface of the annular groove is smaller than the opening area of the annular groove on the end surface.

Of course, it is preferable that a plurality of discrete grooves are provided on the end surface, and the plurality of discrete grooves are uniformly distributed in the circumferential direction of the main body 3.

On the basis of the above embodiment, a gasket 5 may be provided on an end surface of the waterproof ring 4 relatively far from the main body 3 so as to prevent the waterproof ring 4 from rotating following the packing nut 6 when the packing nut 6 is screwed.

Preferably, the gasket 5 can be a metal gasket, and has high structural strength and long service life.

On the basis of the above embodiment, the fastener can be the hexagon nut 1, and the threaded section that is used for being connected with the hexagon nut 1 is equipped with on main part 3 and prevents slow-witted tie position, and the length of preventing slow-witted tie position is the same with the length of threaded section. Prevent slow-witted flat position's setting, will compel during the assembly on the one hand the nut 6 mistake of will packing to adorn in one section of being connected with hexagon nut 1, on the other hand can avoid locking hexagon nut 1 time, main part 3 with compel to take place to follow up the commentaries on classics between the nut 6.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above that the utility model provides a cable fixing head has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The cable fixing head is characterized by comprising a main body (3), a packing nut (6), a fastener, a waterproof ring (4) and a blank cap (7), wherein one end of the main body (3) is connected with the fastener, the other end of the main body (3) is in threaded connection with the packing nut (6), the waterproof ring (4) is connected with the main body (3), and the waterproof ring (4) is installed in an inner hole of the packing nut (6);

a boss (42) is arranged on the surface of an inner hole of the waterproof ring (4), one end, close to the packing nut (6), of the boss (42) is an inclined plane, and the height of one end, close to the packing nut (6), of the inclined plane is larger than that of one end, close to the main body (3), of the inclined plane;

the blank cap (7) penetrates through an inner hole of the packing nut (6) and is arranged in an inner hole of the waterproof ring (4).

2. The cable fixing head according to claim 1, characterized in that the boss (42) is an annular boss provided on the surface of the waterproof ring (4), and the axis of the annular boss coincides with the axis of the waterproof ring (4).

3. Cable fixing head according to claim 2, characterized in that a spacer (5) is provided between the packing nut (6) and the watertight ring (4) to prevent the watertight ring (4) from following the packing nut (6) when screwing the packing nut (6).

4. Cable fixing head according to claim 2, characterized in that one of the end face of the waterproofing ring (4) relatively close to the body (3) and the end face of the body (3) relatively close to the clamping nut (6) is provided with a projection (41) and the other is provided with a groove (32) for clamping with the projection (41).

5. The cable fixing head according to claim 4, characterized in that the end surface of the main body (3) relatively close to the packing nut (6) is provided with a plurality of discrete grooves, and the plurality of discrete grooves are evenly distributed in the circumferential direction of the main body (3).

6. The cable fixing head according to any one of claims 1 to 5, wherein the fastener is a hexagonal nut (1), and a threaded section of the main body (3) for connecting with the hexagonal nut (1) is provided with a fool-proof level, and the length of the fool-proof level is the same as that of the threaded section.

7. The cable fixing head according to claim 6, characterized in that the cross section of the boss (42) is isosceles trapezoid.